get_calendar_categories

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden, and it discloses essentially nothing beyond the fact that a list is returned (which the output schema already covers). For a zero-argument read-only enumeration there is little risk to disclose, but the description does not even confirm it is a safe, side-effect-free, no-auth lookup.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The same fact is restated four times: the title line, a pipe-separated keyword soup, a 'list all categories' sentence, and a 'Returns' block that duplicates the existing output schema. The pipe-delimited keywords are not front-loaded information but noise, and roughly half the text is redundant.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a trivial no-arg enumeration with an output schema, the description is minimally sufficient. But against a sibling set crowded with near-identical calendar taxonomy endpoints, it omits the one thing that would make it complete: how categories differ from types, tags, and locations.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

There are zero parameters, so the baseline is 4. Nothing in the description could add parameter meaning, and it correctly refrains from inventing filters that do not exist.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

It states a specific verb and resource (list all parliamentary calendar event categories), so an agent knows exactly what it retrieves. However it gives no differentiation from the near-identical siblings get_calendar_types, get_calendar_tags, and get_calendar_locations, and the keyword 'event types' actively blurs the line with get_calendar_types rather than sharpening it.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

There is no statement of when to call this versus the taxonomy siblings, and no prerequisites or exclusions. The agent must infer from the name alone that this is an enumeration/lookup endpoint rather than a filtered search.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.